Precision Handling in Python
Python in its definition allows handling the precision of floating-point numbers in several ways using different functions. Most of them are defined under the “math” module. Some of the most used operations are discussed in this article.
- trunc():- This function is used to eliminate all decimal parts of the floating-point number and return the integer without the decimal part.
- ceil():- This function is used to print the least integer greater than the given number.
- floor():- This function is used to print the greatest integer smaller than the given integer.
The integral value of number is : 3 The smallest integer greater than number is : 4 The greatest integer smaller than number is : 3
There are many ways to set the precision of the floating-point values. Some of them are discussed below.
- Using “%”:- “%” operator is used to format as well as set precision in python. This is similar to “printf” statement in C programming.
- Using format():- This is yet another way to format the string for setting precision.
- Using round(x,n):- This function takes 2 arguments, number, and the number till which we want decimal part rounded.
The value of number till 2 decimal place(using %) is : 3.45 The value of number till 2 decimal place(using format()) is : 3.45 The value of number till 2 decimal place(using round()) is : 3.45
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